Electrical Machines
An alternator is feeding an infinite busbar. Its prime mover is suddenly shutdown. The alternator will

 come to stand still.
 start working as induction motor.
 continue to work as alternator but the direction of rotation will reverse.
 continue to work as synchronous motor with same direction of rotation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Cogging and crawling are phenomena associated with

 the former during starting and the latter at a fraction of its rated speed.
 the former at a fraction of its rate speed and the latter during starting.
 any of the above.
 cage induction machines and they are essentially the same.

ANSWER DOWNLOAD EXAMIANS APP